# Japan Steel Works to invest JPY 10 billion to expand nuclear component capacity at Muroran Plant

Japan Steel Works (JSW) announced an investment of approximately JPY 10 billion to expand manufacturing capacity for fossil and nuclear power-related products at its Muroran Plant. The investment will lift capacity for generator rotor shafts and steam turbines to 1.5 times the current level by the end of FY2028.

- Type: Expansion
- Announced: 2025-11-14
- Where: Muroran, Hokkaido, Japan
- Value: $67.0M (10.0B JPY)
- Starts operating: 2029
- Status: announced
- Capacity: 1.5 times current capacity for generator rotor shafts and steam turbines
- Products: generator rotor shafts, steam turbines, nuclear reactor components, cask components
- Sectors: [Power Generation Equipment](https://endata.com/sectors/power-generation-equipment.md)

## Companies

- [The Japan Steel Works](https://endata.com/companies/6204.md)

## Sources

- [jaif.or.jp](https://www.jaif.or.jp/en/news/industry/7711), 2025-11-24: "JSW will invest approximately JPY 10 billion to expand manufacturing capacity for fossil and nuclear power-related products."

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Data from Endata (https://endata.com/). Announcements are summarized from public sources and may be incomplete; check the linked originals.